WO2017217951A1 - A screening machine for grain products - Google Patents
A screening machine for grain products Download PDFInfo
- Publication number
- WO2017217951A1 WO2017217951A1 PCT/TR2017/050222 TR2017050222W WO2017217951A1 WO 2017217951 A1 WO2017217951 A1 WO 2017217951A1 TR 2017050222 W TR2017050222 W TR 2017050222W WO 2017217951 A1 WO2017217951 A1 WO 2017217951A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screener
- screening machine
- products
- mentioned
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Definitions
- the invention is about a screening machine which is used after the harvest, to separate grain products from crushed ones, granules and pods.
- running component of the screening machine is not covered, and takes 4 different sizes of the product.
- Cleaning the product with an aspirator affects the environment with regards to dust, and decreases the air suction power.
- the working principle of the current machines is; the product poured into the screening container is separated from big and granule particles. With the vacuum created by the developed aspirator room, it is separated from materials such as waste, hay, granules, etc. After the product is cleaned, it is delivered to sizing units by the middle elevator, which is the second elevator.
- the feature of the invention is; including screener angle adjustment handles which are connected to the top and bottom screener cases mentioned and which provide for adjusting the angles of screeners; product screening container which is positioned under the product feeding container mentioned; first fan which provide for the products to be separated in the product screening container before they are poured into top screener cases, which is connected with the product screening container mentioned.”
- the invention is a waste purifier machine structure, which is used to separate waste, hay, anther, other big and small foreign materials from grain products, providing high screening feature in a minimum area according to the type of the grain, saving for space due to the magnet system integrated on the product entry section and the air suction carried out at the back, including an auxiliary laying roller which help the grain to be fed and distributed evenly, which can classify the product thanks to its multi-layer screener structure, enabling high capacity and effective cleaning according to usage field, having the easy cleaning feature.”
- Another significant purpose of the invention is, the product can be obtained in 5 different sizes, due to expansion of the screening area. Therefore a capacity increase would occur.
- One purpose of the invention is; because the running components of the machine are covered, it will be a safer structure for users.
- One purpose of the invention is; expanding the screening surface, thus increasing the production capacity to a higher level.
- One purpose of the invention is; eliminating the need for additional machines, because a clean environment and high capacity would be obtained.
- the invention includes, a top screener and a middle parallel screener positioned as parallel to this top screener, which provide for the raw materials to be screened, ending up as products, - a top container which is not parallel to the mentioned top and middle parallel screeners, positioned at a different angle, having a screener with bottom angle, multiple direction elements that are positioned at the bottom of the top screener, which provide for evenly distribution of raw materials, a gutter for big sizes, structured at the extension of the top screener end, gathering big size products, a gutter for granules, structured at the middle parallel screener bottom section, gathering granules, a gutter for crushed products, structured at the extension of the near-end of the middle parallel screener, gathering crushed products, - and the clean product exit, structured at the extension of the end of the middle parallel screener.
- Figure-1 The overall perspective visual of the screening machine which is the subject of the invention, positioned in the facility.
- FIG-2 The overall perspective visual of the screening machine which is the subject of the invention, in its assembled state
- FIG-3 The overall perspective visual of the screening machine which is the subject of the invention, in its disassembled state Figure-4; The overall perspective visual of the top container element of the screening machine which is the subject of the invention
- Screening machine 20 Main body 30. Bottom body
- screening machine (10) includes; top screener (43) which provides for the raw materials to be screened and ended up as products, a middle parallel screener (43.1) which is parallel to this top screener (43), a top container (40) having a bottom angle screener (43.2) which is not parallel to the top screener (43) and the middle parallel screener (43.1) mentioned, positioned at a different angle. It includes multiple direction elements (42) positioned at the bottom surface of the top screener (43) and providing for the raw materials to be distributed evenly, and a gutter for big sizes (45), which is structured at the extension of the end of the top screener (43) mentioned, gathering big size products.
- a gutter for granules (44), which is structured at the middle parallel screener (43.1) mentioned, bottom area, gathering granule products.
- a gutter for crushed products (46), which is structured at the near-end extension of the middle parallel screener (43.1) mentioned.
- a clean product exit 47, structured at the extension at the end of the middle parallel screener (43.1) mentioned.
- At least one helix (70) is integrated to the system, providing for the exit of scattered light weight waste in the air suction container (90), through a helical action. Additionally, it includes; a bottom body (30) which provides for the connection of the screening machine (10) with the floor, and acting as a body for the aspirators (80) mounted in it.
- an air suction container (90) is created, which provides for the separation of the raw materials entering the screening machine (10) from granules and light weight waste by the aspirators (80), and prevention of the created air from being spread to the environment. Additionally, it includes a vibratory feeding container (110), which lays the raw material throughout the screener (43) by using the speed controlled vibratory feeder, providing for maximizing productivity of the screening machine (10).
- the screening machine (10) in question runs as follows, in broad sense.
- Raw materials enter the screening machine (10) from the raw materials entry orifice (100).
- Through the vibratory feeding container (1 10) raw materials are spread over the top screener (43), middle parallel screener (43.1) and bottom angle screener (43.2) horizontally.
- aspirators (80) make a vacuum effect and provide for the light weight waste in the raw materials to be gathered in the air suction container. This gathered waste is thrown away with the help of the helix (70), by a helical action.
- Screeners in the top container (40) and bottom container (50) swing with the help of the swinging element (60) and provide for the raw materials to be classified according to sizes.
- Sized products are taken away through the product exit orifices (41), which are connected to the main body (20) by bolts.
- the natural product which enter the top container (40), being the subject of the invention, through the product entry orifice (41), is pushed forward by the multiple direction elements (42) made of sheet metal, and passes through top screener (43), middle parallel screener (43.1) and bottom angle screener (43.2). Thanks to the gutter for big sizes (45) and gutter for granules (44), the product is separated from the granules.
- the product which is separated from its granules is screened once again by the new added gutter for crushed products (46)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Screening machine (10) used for grain products after the harvest, to separate from crushed ones, granules and pods, the screening machine (10) including; top screener (43) which provides for the raw materials to be screened and ended up as products, a middle parallel screener (43.1) which is parallel to this top screener (43), a top container (40) having a bottom angle screener (43.2) which is not parallel to the top screener (43) and the middle parallel screener (43.1) mentioned, positioned at a different angle, multiple direction elements (42) positioned at the bottom surface of the top screener (43) and providing for the raw materials to be distributed evenly, a gutter for big sizes (45), a gutter for granules (44), and a gutter for crushed products (46).
Description
A SCREENING MACHINE FOR GRAIN PRODUCTS
DESCRIPTION
Technical Area
The invention is about a screening machine which is used after the harvest, to separate grain products from crushed ones, granules and pods.
Previous Technique Today, there are some problems with processing, cleaning and separating grain products for various sizes in the same machine. In the current technique, although some machines exist, because the running components of the machines are not covered, there is a problem of dirty environment, and a problem of insufficient capacity, because the screening surface cannot be expanded.
In the current technique, running component of the screening machine is not covered, and takes 4 different sizes of the product. Cleaning the product with an aspirator affects the environment with regards to dust, and decreases the air suction power. The working principle of the current machines is; the product poured into the screening container is separated from big and granule particles. With the vacuum created by the developed aspirator room, it is separated from materials such as waste, hay, granules, etc. After the product is cleaned, it is delivered to sizing units by the middle elevator, which is the second elevator.
During the research for the previous technique, the application numbered 2014/0849 was encountered. Abstract page of this application is; "It is about the screener cases in which the products in the main body are screened; screener swinging handles connected to the screener cases mentioned; eccentric handles which are connected to the screener swinging handles mentioned and which transfer the action received from the engine to screener swinging handles; eccentric secretion system which provide action for the eccentric handles and screener cases mentioned; top nacelle and bottom nacelle in which the screener cases are fixed; and the screening section of the grain screening
machines comprised of screener angle adjustment pistons that provide for adjusting the angle/bevel of the screener cases and connected to the top and bottom nacelles mentioned."
During the research for the previous technique, another application numbered 2014/15408 was encountered. Abstract page of this application is; "It is about a grain screening machine to be used in agriculture and seeds business for vacuuming granules and waste; including a main body; a product feeding container which is on the main body mentioned and which contains the product to be screened; top screener cases and bottom screener cases in which the products are screened, and which is on the main body mentioned; screener swinging handles connected to top and bottom screener cases mentioned; eccentric secretion handles which are connected to the screener swinging handles mentioned and which transfer action to screener swinging handles; and an eccentric shaft which transfers the action it receives from the propulsion element to the eccentric secretion handles mentioned. The feature of the invention is; including screener angle adjustment handles which are connected to the top and bottom screener cases mentioned and which provide for adjusting the angles of screeners; product screening container which is positioned under the product feeding container mentioned; first fan which provide for the products to be separated in the product screening container before they are poured into top screener cases, which is connected with the product screening container mentioned."
Abstract page of another application numbered 2011/05761 that came out as the result of the research on the previous technique is; "The invention is a waste purifier machine structure, which is used to separate waste, hay, anther, other big and small foreign materials from grain products, providing high screening feature in a minimum area according to the type of the grain, saving for space due to the magnet system integrated on the product entry section and the air suction carried out at the back, including an auxiliary laying roller which help the grain to be fed and distributed evenly, which can classify the product thanks to its multi-layer screener structure, enabling high capacity and effective cleaning according to usage field, having the easy cleaning feature."
Abstract page of another application which is US based and numbered US6758342 B1 that came out as the result of the research on the previous technique is; "It includes a grain sorting system, a sorting device working on wind power, a rough sorting device and a roll sorting device. Sorting device working on wind power cleans light weight
foreign materials in the grain. Rough sorting device cleans foreign materials of different size than the standard size in the grain. Roll sorting device removes foreign materials of other forms than the standard form, which are left from the rough sorting device and wind power sorting device processes." .
As a result, because of the problems explained above and because the current solutions on the issue are insufficient, a development in the related technical area is required.
Description of the Invention Primary purpose of the invention is to minimize the dirt in the environment, due to its covered structure.
Another significant purpose of the invention is, the product can be obtained in 5 different sizes, due to expansion of the screening area. Therefore a capacity increase would occur. One purpose of the invention is; because the running components of the machine are covered, it will be a safer structure for users.
One purpose of the invention is; expanding the screening surface, thus increasing the production capacity to a higher level.
One purpose of the invention is; eliminating the need for additional machines, because a clean environment and high capacity would be obtained.
To reach the purposes explained above, the invention includes, a top screener and a middle parallel screener positioned as parallel to this top screener, which provide for the raw materials to be screened, ending up as products, - a top container which is not parallel to the mentioned top and middle parallel screeners, positioned at a different angle, having a screener with bottom angle, multiple direction elements that are positioned at the bottom of the top screener, which provide for evenly distribution of raw materials, a gutter for big sizes, structured at the extension of the top screener end, gathering big size products,
a gutter for granules, structured at the middle parallel screener bottom section, gathering granules, a gutter for crushed products, structured at the extension of the near-end of the middle parallel screener, gathering crushed products, - and the clean product exit, structured at the extension of the end of the middle parallel screener.
Figures That Will Help For Understanding the Invention
Figure-1 ; The overall perspective visual of the screening machine which is the subject of the invention, positioned in the facility.
Figure-2; The overall perspective visual of the screening machine which is the subject of the invention, in its assembled state
Figure-3; The overall perspective visual of the screening machine which is the subject of the invention, in its disassembled state Figure-4; The overall perspective visual of the top container element of the screening machine which is the subject of the invention
Figure-5; The profile visual of the top container element of the screening machine which is the subject of the invention
Part Numbers
10. Screening machine 20. Main body 30. Bottom body
40. Top container
41. Product entry orifice
42. Direction element
43. Top screener
43.1 Middle parallel screener
43.2 Bottom angle screener
44. Gutter for granules
45. Gutter for big sizes 46. Gutter for crushed products
47. Clean product exit
48. Side protection plate 50. Bottom container 60. Swinging element 70. Helix
80. Aspirator
90. Air suction container
100. Raw materials entry orifice
110. Vibratory feeding container
Detailed Description of the Invention
It is a screening machine (10) used for grain products after the harvest, to separate from crushed ones, granules and pods, to classify the products according to sizes, including a main body (20), a raw materials entry orifice (100) through which products enter, a swinging element (60) and screeners.
In this state, screening machine (10) includes; top screener (43) which provides for the raw materials to be screened and ended up as products, a middle parallel screener (43.1) which is parallel to this top screener (43), a top container (40) having a bottom angle screener (43.2) which is not parallel to the top screener (43) and the middle parallel screener (43.1) mentioned, positioned at a different angle. It includes multiple direction elements (42) positioned at the bottom surface of the top screener (43) and providing for the raw materials to be distributed evenly, and a gutter for big sizes (45), which is structured at the extension of the end of the top screener (43) mentioned, gathering big
size products. Additionally, it includes a gutter for granules (44), which is structured at the middle parallel screener (43.1) mentioned, bottom area, gathering granule products. Also, it includes a gutter for crushed products (46), which is structured at the near-end extension of the middle parallel screener (43.1) mentioned. Also, it has a clean product exit (47), structured at the extension at the end of the middle parallel screener (43.1) mentioned.
It includes a side protection plate (48) which is covering the top container (40) at the sides, and a bottom container (50) which ensures that, while the product is flowing, the screeners (43) transfer the active products in an order. At least one helix (70) is integrated to the system, providing for the exit of scattered light weight waste in the air suction container (90), through a helical action. Additionally, it includes; a bottom body (30) which provides for the connection of the screening machine (10) with the floor, and acting as a body for the aspirators (80) mounted in it. Also, an air suction container (90) is created, which provides for the separation of the raw materials entering the screening machine (10) from granules and light weight waste by the aspirators (80), and prevention of the created air from being spread to the environment. Additionally, it includes a vibratory feeding container (110), which lays the raw material throughout the screener (43) by using the speed controlled vibratory feeder, providing for maximizing productivity of the screening machine (10).
The screening machine (10) in question runs as follows, in broad sense. Raw materials enter the screening machine (10) from the raw materials entry orifice (100). Through the vibratory feeding container (1 10), raw materials are spread over the top screener (43), middle parallel screener (43.1) and bottom angle screener (43.2) horizontally. During this spreading, aspirators (80) make a vacuum effect and provide for the light weight waste in the raw materials to be gathered in the air suction container. This gathered waste is thrown away with the help of the helix (70), by a helical action. Screeners in the top container (40) and bottom container (50) swing with the help of the swinging element (60) and provide for the raw materials to be classified according to sizes. Sized products are taken away through the product exit orifices (41), which are connected to the main body (20) by bolts.
The natural product which enter the top container (40), being the subject of the invention, through the product entry orifice (41), is pushed forward by the multiple direction elements (42) made of sheet metal, and passes through top screener (43), middle parallel screener (43.1) and bottom angle screener (43.2). Thanks to the gutter for big sizes (45) and gutter for granules (44), the product is separated from the granules. The product which is separated from its granules is screened once again by the new added gutter for crushed products (46)
. Product that is separated from its crushed parts and granules is transferred to the bottom angle screener (43.2) for sizing.
Claims
1- It is a screening machine (10) used for grain products after the harvest, to separate from crushed ones, granules and pods, to classify the products according to sizes, including a main body (20), a raw materials entry orifice (100) through which products enter, a swinging element (60) and screeners, and its feature is including; top screener (43) which provides for the raw materials to be screened and ended up as products, a middle parallel screener (43.1) which is parallel to this top screener (43), a top container (40) having a bottom angle screener (43.2) which is not parallel to the top screener (43) and the middle parallel screener (43.1) mentioned, positioned at a different angle, multiple direction elements (42) positioned at the bottom surface of the top screener (43) and providing for the raw materials to be distributed evenly, a gutter for big sizes (45), which is structured at the extension of the end of the top screener (43) mentioned, gathering big size products, a gutter for granules (44), which is structured at the middle parallel screener (43.1) mentioned, bottom area, gathering granule products, a gutter for crushed products (46), which is structured at the near-end extension of the middle parallel screener (43.1) mentioned, and a clean product exit (47), structured at the extension at the end of the middle parallel screener (43.1) mentioned.
2- It is a screening machine (10) meeting Claim 1 , and its feature is including a side protection plate (48) which is covering the top container (40) mentioned at the sides,
3- It is a screening machine (10) meeting Claim 1 , and its feature is including a bottom container (50) which ensures that, while the product is flowing, the screeners (43) transfer the active products in an order.
It is a screening machine (10) meeting Claim 1 , and its feature is including a helix (70), providing for the exit of scattered light weight waste in the air suction container (90), through a helical action.
It is a screening machine (10) meeting Claim 1 , and its feature is including a bottom body (30) which provides for the connection of the screening machine (10) with the floor, and acting as a body for the aspirators (80) mounted in it.
It is a screening machine (10) meeting Claim 1 , and its feature is including an air suction container (90), which provides for the separation of the raw materials entering the screening machine (10) from granules and light weight waste by the aspirators (80) and prevention of the created air from being spread to the environment.
It is a screening machine (10) meeting Claim 1 , and its feature is including a vibratory feeding container (1 10), which lays the raw material throughout the screener (43) by using the speed controlled vibratory feeder, providing for maximizing productivity of the screening machine (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201608328 | 2016-06-17 | ||
| TR2016/08328 | 2016-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017217951A1 true WO2017217951A1 (en) | 2017-12-21 |
Family
ID=59923535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2017/050222 Ceased WO2017217951A1 (en) | 2016-06-17 | 2017-05-26 | A screening machine for grain products |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2017217951A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317402A (en) * | 2018-09-21 | 2019-02-12 | 张霁圆 | A kind of coarse-fine screening plant of multistage for black tea processing |
| WO2020005166A1 (en) | 2018-06-25 | 2020-01-02 | Muanchart Mankaew | Process for growing plant with small element |
| RU2813608C1 (en) * | 2023-07-04 | 2024-02-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный горный университет" | Vibrating screen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1177910B (en) * | 1961-08-08 | 1964-09-10 | Fraembs & Freudenberg K G | High-speed fine screening machine |
| DE2135295A1 (en) * | 1970-07-16 | 1972-01-27 | Agrostroj Prostejov, N.P., Prostejov (Tschechoslowakei) | Machine for pre-cleaning and cleaning of grains and seeds |
| DE7407300U (en) * | 1974-06-20 | Allgaier Werke Gmbh | Vibrating screening machine with a large, rectangular screen structure | |
| US4971684A (en) * | 1986-12-01 | 1990-11-20 | Gebruder Buhler Ag | Compact machine and process for preparation prior to dry-grinding of grain type foodstuffs and feedstuffs |
| US6758342B1 (en) | 2000-04-04 | 2004-07-06 | Harada Sangyo Co., Ltd. | Cereal grain sorting system and roll sorting machine |
| WO2007069970A1 (en) * | 2005-12-13 | 2007-06-21 | Sandvik Intellectual Property | Screening arrangement |
| TR201105761U (en) | 2011-06-13 | 2011-07-21 | Uğur Maki̇ne Sanayi̇ Gida İnşaat Taahhüt Endüstri̇yel Yapilar Turi̇zm Tarim Diş Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Innovation in garbage disposal machine. |
-
2017
- 2017-05-26 WO PCT/TR2017/050222 patent/WO2017217951A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7407300U (en) * | 1974-06-20 | Allgaier Werke Gmbh | Vibrating screening machine with a large, rectangular screen structure | |
| DE1177910B (en) * | 1961-08-08 | 1964-09-10 | Fraembs & Freudenberg K G | High-speed fine screening machine |
| DE2135295A1 (en) * | 1970-07-16 | 1972-01-27 | Agrostroj Prostejov, N.P., Prostejov (Tschechoslowakei) | Machine for pre-cleaning and cleaning of grains and seeds |
| US4971684A (en) * | 1986-12-01 | 1990-11-20 | Gebruder Buhler Ag | Compact machine and process for preparation prior to dry-grinding of grain type foodstuffs and feedstuffs |
| US6758342B1 (en) | 2000-04-04 | 2004-07-06 | Harada Sangyo Co., Ltd. | Cereal grain sorting system and roll sorting machine |
| WO2007069970A1 (en) * | 2005-12-13 | 2007-06-21 | Sandvik Intellectual Property | Screening arrangement |
| TR201105761U (en) | 2011-06-13 | 2011-07-21 | Uğur Maki̇ne Sanayi̇ Gida İnşaat Taahhüt Endüstri̇yel Yapilar Turi̇zm Tarim Diş Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Innovation in garbage disposal machine. |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020005166A1 (en) | 2018-06-25 | 2020-01-02 | Muanchart Mankaew | Process for growing plant with small element |
| CN109317402A (en) * | 2018-09-21 | 2019-02-12 | 张霁圆 | A kind of coarse-fine screening plant of multistage for black tea processing |
| RU2813608C1 (en) * | 2023-07-04 | 2024-02-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный горный университет" | Vibrating screen |
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